Ashton, J., Ritson, C., & Harvey, D. R. (1991). The Common agricultural policy and the world economy: Essays in honour of John Ashton. C·A·B International.
Citazione stile Chigago Style (17a edizione)Ashton, J., Christopher Ritson, e David R. Harvey. The Common Agricultural Policy and the World Economy: Essays in Honour of John Ashton. Wallingford, Oxon, UK: C·A·B International, 1991.
Citatione MLA (8a ed.)Ashton, J., et al. The Common Agricultural Policy and the World Economy: Essays in Honour of John Ashton. C·A·B International, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.